9+5,1x=49(1+0,1x)
9+5,1x=49+4,9х
5,1x-4,9х=49-9
0,2х=40
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9+5,1x=49(1+0,1x)
9+5,1x=49+4,9х
5,1x-4,9х=49-9
0,2х=40
х = 200